There were no new security measures in place at the airport, but that could change.

Renato Corbetta, an international studies professor at Univeristy of Alabama-Birmingham, said the Paris attacks show a new tactic by the terrorists.

"This (is) kind of a change in strategy on the part of ISIS again, if they are the ones really behind these attacks, in terms of employing terrorist tactics outside of their own region," he said.

This change in terrorist strategy could mean a change in security in the United States, Corbetta said.

"You can expect a stepped-up response in order for our anti-terrorism forces and security agencies to be able to detect this change in strategy from ISIS because Europe is an easier target," Corbetta said. "We can't rule out the United States won't be a target as well."